Double-acting motor



Patented Dec. 9,1019.

2 SHEETS-SHEET l.

S. JENCICK DOUBLE ACTING MOTOR.

APPUCATION FILED Aus 9.1915.

LSZZLSB.

S. JENCICK.

DOUBLE ACTING MOTORv AFPLIcMloN FILED AUG 9.19m.

Patented Dec. 9,1919.A 2 SHEETS-SHEET 2 n.c mw N. www f p n 5 WlT/VESSES:

" En sIATEs Per auch;

i STEPHEN JENCIGK, 0E MINNEAPOLIS, MINNESOTA.

DOUBLE-ACTING MOTOR.

Specification of Letters Patent.

Patented nec. a, raie.

Application led August 9,1915. Serial No. 44.555.

To all whom t may concern:

Be it known that I, STEPHEN JENCIGK, `a subject of the State of Austria,residing at the city of Minneapolis, inthe county of `Hennepin and Stateof Minnesota, have invented a new and useful Double-Acting Motor, ofwhich the followingl is a specification.

My invention relates to improvements in internal combustion engineswherein the piston yof each cylinder receives animpulse"V upon eachalternate downward, Aand upon each alternate upward traverse .of thecylinder thereby greatly reducing the weight of the motor and the numberof parts used therein as compared with motors now in common use. Aparticular object of-my invention is to provide cooling 4means for thedouble acting piston therebyy renderingv the 'Y foregoing constructionpractical.

attain these objects by the mechanismy yand piston rods on *the line A Ain Figll'.

YSimilar figures refer tol similarparts throughout the several views. lThe lower half 1 of the crank case, and upper half 2.of the crankK case,which also serves as the base ofthe motor, carbureter 3 i.

and carbureter manifold 4, are similar"- to corresponding parts'in theother motors now: s f' in use, and therefore need not be described .indetail. .v

Cylinder 5 is jacketed bythe ordinary type ofwater jacket 6,'of whichport- 7 is the outlet. ithin cylinderj. are located two distinctchambers separated by stationary cross-'head 8` to wit, an upperexploslon chamber 5a and a flowerpump chamber ti. ln vthe pump chamberis located pump piston 9, mounted upon connecting rod 11 by wrist pin1() and connected to crankshaft` 12 in the usual manner.- p

Hollow piston 13 travels in'the upper or ex losion chamber of cylinder 5and 1s provided 'with hollow piston' rodsl4, which are formed integrallywith the piston.

Cross-head 8 is held irmly in position by sleeve 14 which is held to thecylinder 5 y Pump 20 is mounted upon shaft 19 and is `adapted tocirculate the liquid cooling me- Fig. 411s a crossl l by screws 1.5,which thereby clamp the crosshead 8 between the end of sleeve 14 and theshoulder formed in cylinder 5 adjacent to the top of cross-head 8, wherethe diameter of the upper portion of the cylinder is reduced below thatof thelower portion.

Spark plugs 16 and 17 are suitably positloned in the upper and lowerends of the combustion chamber respectively. Cam shaft 18 is driven frompump shaft 19 by lines in Fig. 1. Pump shaft 19 is driven from ,crankshaft 12 by the sprockets and chain indicated in dotted lines 1n Fig. 1.

diuml through tube 21, waterjacket 6, outlet'f? tand ldther'suitablecooling means in 'connection therewith. Exhaust 'valves 23 land22'op'eninto-exhaust manifolds 24 and r25 respectively. '1 The valves 23and 22 are zactuatedby rocker arms 26 and 27 pivoted at theirextremities 28 `and 29. rI"hese rocker arms engage theI valvesv andareactuatedby the cam 30, which is driven inA proper timed relation withrespect to the crankshaft. y' v The exhaustvalves and their operating Ymechanism` just describedfareduplicated in structure and arrangement andserve as the inlet valves` which communicate with the intake manifold 4.They are arranged to therear of the exhaust valvesyas's'hown vin Fig. 1,and :serve toestablish communication at the proper time between theintake manifold and the comloustionV chambers. Y

v Dust cover 31 provides a suitable covering and protection for the.valve mechanism an serves to decrease the amount of noise given ofi'from the action ofthe valve mechanism. a5

Oil reservoir 32 attachedV to the bottom of the crank case is providedwith means 33 for cooling the contents of the reservoir.

Force feedl lubricating punip34'is adapted to force oil under pressurethrough tubes 100v 35, 36, 37 and 38 to all parts of the motorrequiring'lubrication. Tube 38 has its outlet on the inside of sleeve 14and produces a 'continuous flow of oil into the space within the sleeve.As pump piston 9 travels below 105 the outlet of tube 38 it collects oiland after it passes said outlet upon' its upward movement it forces theoil collected above the piston into one of the hollow piston rods 14 atports 39 through said rod, piston 13, the 110 lthe sprockets and chainindicated in dotted vte i cylinder,

other rod 14 and out through port 40 from whence it drips overv thewrist pin, connecting rod and crank shaft into the base of the motor andfrom thence it drains to reservoir 32.

Fig.l 4 shows the construction of crosshead about the piston rods whichis adapted to prevent leakage of any gas yfrom the lower combustionchamber through the cross-head. Contracting ring 41 located in anannular internal' groove of the cylinder 5, is suitably held in placeand adapted to contact about, and remain in close contact with the outersurfaces of piston rods 14. Expanding ring 42 located in an annularexternal groove of the cross-head 8, is suitably held in placeandadapted to expand against and remain in close contact withthe isurfaces of piston rods 1'4. A Spring wedges 43 are adapted to wedgebetween piston rods 14 and part of-crosshead 8 thereby holding thesurfacev o the 14 in close contacttherewith.

Heretofore double acting motors havenot been provided withsuitable'cooling means for the double acting pistons and the'piston rodswhich pass through one of the combus- 1 tion chambers have beeninadequately cooled and very much exposed to the heat of lthe explosionsin such combustion chambers. The construction employed in my atentprovides a positive cooling circu ation through the double acting istonwith few additional partsand wit out additional moving parts.

I claim: Y u

1. In a motor of the kind described a two combustion chambers in saidcylinder'separated one from thel other by a hollow double acting piston,two hollow piston rods connected to the double acting piston and formedto correspond with and t againstthe sides oi the interior of thecylinder, andmeans for providing a circulation of the/liquid lubricatingmedium of the motor through said piston rods and piston. l

2. In a motor of 'the kind described a cylinder, two combustion chambersin said cylinder se arated one from the other` by a hollow dou leacting'piston, two hollow piston rods connected to the double actingpiston and forin'ed to correspond with and fit against the sides of theinterior of the :cylinder, a stationary cross-head means therein adaptedto ermit the lon itudinal movement of sai piston rods without anyleakage of adjacent thereto, and means for providing a circulation ofthe liquid lubricating'medium of the motor through said piston rods andiston.

3. n a motor of the kind described a gas from the combustion chamber`movement of saidpiston rods without any leakage of gas from thecombustion chainber adjacent thereto, said means comprising acontracting ring carried bythe cylinder and adapted to'bear against theouter sure, face of each of said ,.pistonf rods, an exfpanding ringcarried by the cross-head `and adapted to bear against the inner surfaceof each of said pistonfro'ds, spring wedges adapted to bearf againsteach of the sidesv catingjmedium'- of -the motor through said Y pistonrods 'and piston.' '1 l wedges adjacent to the sides of'piston rods 4.'11i-"a, .m am ,f' that kan' described, a

= of each of saidV piston rods, and means for `i providing a circulationof the liquid lubricylinder having a vcross-head forming in saidcylinderl anv explosion chamber and pump cv amber, a'hollowpistontraversing said explosion chamber-,g a' pump piston traversing saidl,pum chamber, vmeans forV supplying liquid lul ricatingme'diuin to the.pump chamber abovethle pump piston, and means for circulatingthe`lubricant abovethe pump piston through the hollow piston.

5. In a motor of the kind described, a

cylinder having a cross-head forming in said cylinderan explosionchamber and a pump chamber, a hollow piston traversing said explosionchamberyapump piston traversing said `ump chamber, apiston rodconnecting sai pistons, lineansf.,for ,supplyingA liquid .lubricatingmediumy to the' pump chamberv above the` piston,` and -means forcirculating the lubricating medium above the pump piston through saidpiston .rod and hollow piston.

ico t 6. In a motor ofr the kind `described, a

cylinder -having a cross headforming in said cylinder an explosionchamber anda pump chamber, a hollow piston traversing l said explosionchamber, a pump piston trav- ,ersing said pump'chamber, piston rods con-.nectin said pistons' and lying ini-contact with t e wall of vsaidcylinder,means roi. supplying liquid lubricating medium to said pumpchamber above the pump piston, and

`means whereby tlie' ytravers e ofy the pump piston, circulates vsaidlubricating medium `throulgh said pistonrods and hollow iston.

7. n a motor di', the kind descri ed, a cylinder having a-cross headforming in said cylinder an explosion chamber and a pump chamber,a'hollow piston traversing said explosion chamber, apump pistontraversing said pump chamber, piston rods connecting sai pistons andlying in contact with the Wall of said cylinder, having openings incommunication with the openingin said hollow piston and opening outabove and adjacent to said pump piston, means for supplying liquidlubricating medium to said pump chamber above the pump piston, saidlubricating medium being circulated through said piston rods and hollowpiston, and means for cooling the Wall of said cylinder.

STEPHEN JENCICK. Witnesses:

S. S. DUDLEY, ELIZABETH C. KELLY.

